Combined type-writing and computing machine.



` I H. HANsoN. commun wPE wRmNG AND coMPuTmG mcnmi. MPLrcATson men nomas. m2. I n

Patentedept 24, 191.8.

H. HANSON. COMBINED rvPEfwmlmG AND communs mcmug; Mmcmgnfnfn umzs. lauf Y 1 1,279,688." atentedSept; 24,A 1918.

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umTsPENcE A niguna A u s A TENS PENCAUA TEN: am.

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FARTHINGS f. u gw n. umso. "COIIB'IIED TYPE WRITING AND COIPUTIMGIACKINE.

APFLICIOI FILED .0V- 29 lll.

Patented sepan, 191g` j BfSHETSV-SHET 4.

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f H. HANSON. .f ycomamfum'ra wmTmG AND coMPurme MAcHH'mE. ,f APPLICATION msu nov. 29. Isla." fuif", 1,279,688. Pmendsept. 24,1918,l asnefrs-snzn s. v

H.' HANSON.

RITING AND COMPUTING MACHINE. APRLICATIoN FILED Nov.

n u comamfo TYPE w 1,279,688.

0.19m. ff PatentedSept. 24,1918.

UNITED 'STATES PATENT oFFIoE.

HANSHANSVON, OF HABI'FGRD, CONNECTICUT, .ASSIGNOl-B., BY MESNE ASSIGNMENTS, T0 UNDEBWOODGCMPUTING MACHINE COMPANY, 0F NEWl YORK, N. YWA COR-P0` nATIoN or NEW Yoan.`

COMBINED TYPE-WRITING AND COMPUTING MACHINE. l y

specificati@ of Letters raient. Patnd Sept, 24, 1913,

Appiicatian med November 29, '1912. serial No. 73eme` To all vwhom t may Concern;v v y l Be it known that I, HANS HANsoN, a c1t1 'zen of the United Sta-tes, residing-in Hart ford, in the county of Hartford and State of Connecticut., have invented certain new and use-ful Improvements in Combined Typellilriting and Computing Machines, of which applications No.4 626,55 0 tiled May, 11, 1911,

and No. 690,281, filed April 1Q, 1912.

In luy application No. 690,281, liled April 12, 1912,'1 showed how addition could -be oarriedonaccording tothe English. or sterling,- monetary system, which as is Well known is as follows.' 1

4 farthings make one penny 12 pence Shilling 20 shillings pound.

l ing-or dial Wheels are always rotated in the rectly through the intermediary of the tens,- 'of di saine direction, whether for addition or sub traction; To, rotate thesewheel's, rack bars bearing settable pins are connected to rotate the computing wheels in one direction.

There isat least one of theseraek bars for' `ienoe bei", as 'the units and tensof pence a wheels-are)connected so as to. rotate 1n In carrying out this purpose, the computfl unison. The number of pins on these bars yariesaccording to the order ofthe bar, and 1n general is the same as the highest number of which the associated computingor dial Wheel is capable of showing. The pins Aare set by corresponding numeral keys, so as'to come at dil'erent points intothe path of a general operator and thus determine theeX- tent of rotation of/the associated computing wheels. y

When ,subtraction is to be carried on, a key is pressed which is arranged to set the pin of highest value on every one of the bars with the exception of the units of pence bar which subtracting operation. This pin, in each case, has a value equal to one lessthan the exchange value between each order and the Vnext lugher order.

To illustrate ,the func tion, if the generaloperator should 4be actuated at` this time," the computing or dial Wheels would be rotated an amount one than a complete cycle of each of -the dial less i ist` . does not come directly in play during the Wheels.' ln other words, the farthings Wheel would be rotated three steps correspondi-n to three f arthings, the tensof pence .and units of pence wheels', which move in unison, would be rotated eleven steps correspondin to eleven pence, the units of shillings Whee would be swung throughl an are o'f nine steps, the tensiof `shillings would be svvun one step, and all of thepounds Wheels would be rotated nine steps. Y v A device which' may take the fo. rn Vof a special `blank ldial or computing .wheel is pro vided on the right side of the fartliln wheel, so as to be Vof a lower order than t `e f farthings Wheel, and in subtracting this wheel is given a, complete revolution the general operator so as tocarry one tothe farthings Wheel, which inturn will carry one tothe pence Wheel and so org-whereby all of the computing-'wheels will have been given an extent of rotation corres ending` to eX- erto the' next' lwill all exhibit hat is to sayfeach change value from each o higher order so. that `the their original showing.v

' computing Wheel will be run through' a com? lete eyelevyhich, however, does not fuman.'

inthe caseof the fathi'ngsvhecl and the tens oflshillin wheel, aconfplcte revolution infissi-rech as t e numbers of a cycle ane repeated 1n the formerthree times and m'tlie number to latter five times on the sin le circumference of the-corresponding whee s In subtracting,howeverthc general operator is not immediately actuated after the highest pin on each bar has been set up( eys the subtraction key, but the numeralA are Irst actuated to Vcause a writing of the' be subtracted.' The actuatlon of the subtraction key, however, changed the mechanism for setting the pins so that instead of setting up pins corresponding to the value of thenumeral keys struck this mechanism will now set up pins correspondingto the complement ofthe number of thenumeral key struck, using one less than Athe exchange valueof each order as the base or the complete number. For example, 1f the numeral key 2 werel struck while writing -in the farthings column for subtraction, the i 20 1 pin will be set up on the farthings bar, there being four farthings ina penny, one less making three, and two from three being one. In each column where a key is struck v for subtracting a number the -pin of highest value on the bar or the ultimate pin, which has been previously set by vthe actua-tion of the subtracting key, will be unset at this `plete cycle o time. I

In other Words, the operation of the subtraction is carriedv onby adding into the computing or dial `wheel the complement of the number struck using one less than the exchange value of each order to the next higherorder as thebase or complete'number, with the provision of adding an ext-ra .-unit to the lowest order, that-is, vthe farthings giving the dial Wheels Aa commovcment less than the value wheel, thereby of the numeral `key struck.

In carrying out this invention,` it has been found convenient to designate the-farthings estone-quarter, one-half and three-quarters of av penny, and inasmuch as these characters are upper case characters in the typewriter, means is provided for setting up pins onthe farthings'bar solely when the machine is in position to write in the fai-things column and also solely when the shift key is actuated at the same time, so as to enable the writing of upper case characters.

Provision 1s also made whereby the shift- -ing ofthe subtraction-key, to cause a sub-A tracting computing operation, will at the same time adjust the ribbon shifting mechanism of the typewriting mechanism, so as to enable the prlntlng 1n a dlt'ferent color while subtracting-from. that used while adding.

. Other features and advantages will here- In the accompanying drawings,

Illigurewl is a Vertical section'take vfrom front to rear with parts broken away to simyplify 'the showing. In this View the parts are shown in their normal adding positions. Fig. isa detail top plan view, showing Lamm the arrangement of jacks whereby the carrlage controls the actuation of the pin bars' according to their order or denomination.

Fig. 3 1s a horizontal sectional view showing t e various pin-setting linkages and conview, are arranged so as to be able tov perform addition.

"nected mechanlsm. The linkages in this Fig. 4 is anenlarged fragmentary' plan I view, showing the pin lbars in detail. IVith the exception of the bar atthe bottom of the view, which is an extrab'ar for carrying one during subtraction, the bars are arranged from bottom to top of the view according to the following sequence: farthings, units of pence, tens of pence, units of shlllings, tens of shillings, umts of pounds, tens of pounds, and so on.

Fig. 5 is a diagrammatic detached view in elevation, showing one of the pound pinbars. y

Fig. 6 is a view similar to Fig. 5 of the units of pence pin bar. b Fig. 7 1s a view of the tens of pence pin Fig. 8 is a view of the tens of shillings pin bar.

Fig. 9 is a view of the farthings pin bar.

Fig. 10 is a 4view which may illustrateeither the extra tens-carrying bar next to the farthings bar orthe extra correcting bar, (i. c. the pin bar of highest denominati-on), bothI ojf which are used solelyin subtracting.

Fig'. 11 is an enlarged fragmentary sectional viewl taken from front to rear, showing the. mechanism with the subtraction key actuated so as to shift the pin-setting mechanism to enable the same toset. the pins for subtraction and not addition.

Fig. 12 is a skeleton perspective view,

showing the relation of the bichrome shifting mechanism to the computing mechanism, and also showing the special means whereby the shifting to Write upper case characters controls the setting of pins on the farthngs bar, and still further showing the means'v whereby the units of pence bar is silenced and the tens of pence bar lifted when writing nnits of pence during a subtracting operation. I

` Fig; 13 is an enlargedtopplan view of. the pin-setting linkages, showmg the same connected for a subtraction operation.

Fig. 14 is a diagrammatic View ofthe numeral keys of the typewriter arranged in Jaxtaposltlon to the pin-settingfmechanisms which they actuate, as shown"",n Fig. 13.

It will be noted in this connection that a l special 1 key is provided, and that the zero key is arranged to actuate a speclal pin-set-- ting linkage, both of which are of lise in con- 'nection with the computing of pence.

Fig. 15 is a fragmentary sectional view, showing the means for restoring the highest ultimate pins setv by the subtraction key,

` 4:intl-'also yshovv'ing-f, the means for silencingv the` units of pence bar and chang'n the c0ntrol lolf the tens ofpenee' bar for su traction.'

Fig. `IGisfa fragmentary sectional View", showing in `elevation the pin-setting .linknges.

Fig'. `1.7 fragmentaryldetail View of the `ineanej actuated by the subtraction key for sl'i'iftingthepin-setting linkages so as to the pins according to subhraction.;` Fig. 1S is a detail top plan View, showlng the'tens of penee bar and the special tene? carrying bar detacl'ied'- from the others to bring ont thearrangement whereby the general' operator Iactuates the former a dlstanee `correaliionding to two plus In advance ofthe other bars; and the latter a distance correending to one pin in advance," whereby n pine whiehfnortnally eorrespondwto lland 20 nient with the other pins which correspond 1W respectively can be arranged in alinetofflfl sothat. all ofthe ultimateor highest valued pins on the bars can be stlt` in subtraetiml at the saine time.

"Fig '19 a detail View of ithe Vmechanism for yraising the farthings bar, showingthe .tame actuated liy the carriage when thelatterfoeeupies a position corresponding to j pr iliing in the farthin s column, whereby a nient "ofthe shift rai'eto Write up r i eliaracters will r`lift the farthings.` ar i pinathereonto be set when the ire actuated to print L, 1L ling to farthings. adetail top, plan view of a comlimiting head or register, showing the tens-i en rry i ng mechanism;

Fig.. 21 is a. vertical detail section,show? ina Ithetens of pounds train. I

" 2L iS a View 'ugs train'. Y, i

. LIS 'iejaiview showing thetens of shilrain. v` 2Min a View showing the pence train.v l ayiew ilshowing the farthings train.y i f f "Fi r.

' things wheel.`

l e the i;

Fig. *28 is a developml view of the tens 'of pence andk units of pence wheels which are connected to move in unlSon; i

Fig. 29 isa developed View of .thel tenaofl l shillings and unita of Sliillinge wlieels,whicl1,

however, are not eo-i'ineeted'to more in una-v son.` i

Fig. 30 a `vertieal section through several of the eoi'nputingr, or dial wheels.

- Fi".- 31 la` a` detail View 'ofthe clutoh' for ive frmnthe general operatorrto the eurl'yfmei" train. v g lleiferrfngmore particularly to the sepa'- `rate parte of this invention embodied in front side of a platenfl.` `The p on a platenframe 18 wich 'carl'fies a roller '-ing 'upwardly extending arms 25y bearing"v 4against-the `rear side'of the shift frame 21.

showing the units of V-two colors. p through a guide"29 Ahichis:vibratedby l Q6 isa view showing the special carry overwheel-for subtraction arranged on` ,theV right Side offtlie farthinge'wheel. l Fig. *27 "s a developed view of the farrespectively jwitligpins 3431111111 35 located at" the form shownin thevdrawings,f1gI indicates character keysand 2'indica`tes numeralkeys Q l lwhich are mounted on keylevers B (Fig 1) connectedr to bell cranks viso as to,y rook the same and swing type bars 5 4up Iaainet the` mounted ona carriage 7, which iscontrollecl j x1 inits traveliby an escapeznentineehanism,

which includes a universalframe actuated Q l by a shoulder 10` ony each of `thetype bara: so ,as to rock a pair ofpafwlaj'llvllifch.altei-` i nately enga'ge an eseapement Wheel 12I con?A nected` to a pinion lnieshingawith'a 'rack` 14.1novably mournted on" thecariage meansiof arms-1f l n y. l l Certain of thekeys, asfwill be seen by ref'-,k erence to Fig; lgjare arranged toprilitv two` `characters', `henee'the t pebars 5 are f roi# vided with two type cA 'aracters ljanfil( (Fig. In the casefof thenumeralkeys 1,2 and 3,- they are alSo used `to print corresponding` to one, two and three iarfjv things. To` enable the wri'tingof theseupil y l i per: case characters,.the` laten4 Gis mounted 190 19 on its lower end,restinguonal rai120'oi Hashift frame 21 which -isaeeuredtoa., rock i shaft 22 so as to-be capableof. swingingup .9.5 1

and down 'to lift andallow the,` depression of the laten 6 with iteframe ,118. `f 'lofac-` eolnplis 1 ythis shifting ofthe `platen and lits" `frame, ,there is f rovlded one or e. `moreshift,

keys `23n1ountec l onk shift `key levers 24 haw The type 1G and 17"ntlilegty'pe bars' strike tlilrough a ribbon. (Fig.` "12) ,which l in tliilsfcase is shown tohave,,alblackpor-v n tion 27 and a` radA portion .28 so as tobecapablo of printing atwill in-eitherfone'o The `ri `on.`g,326 @is threaded ineans of a'bell crank lever 30, which inturn 1s actuated by a slide-'llmountedA .tor move rwith the universal freine "9 'ateach actua-l tion` of any numeral key. The slide. 31, las is cornlnon in the Underwood. `typew1` iting machine, is Inountedfor tra,nsverse'morey ment relative to ythel n'iovernelit; ofV theffranle 9, and-llas aff pairof slotted ears'BQ, andy,

i the slots of which,fhowever, are vertically` offset onel fromtliejothel-,eo asl-to engage diifeient istances front-.the 'pirot-,o'llqflil-` crllun point 8Gy on vthe .bell'crank lev 301f `It willgbe seen that whenthe isxin" i engagement with 'the )in` Shins 'shown in,

Fig. J2', that `the ribbo willi be a small amount, .bringing theybla portion 27 of the ribbon iito the ypathofpt type on the'type bars. df., hciwevfeigthe sli 31., isshifted toward thefleftinvlflg. 11.?,1tl1`efi y 1 ear-33 will 'be brought into"y 1 il the pin, enabling a greater ogs .me tfwitli i 1302* the lever 30 when a type bar is actuated, and thereby causing a greater upward movement of the ribbon 26 so that the red por` thereof willbe brought into the 5 path of movement of the type on-the type tion 28 ars. Y

The mechanismthus far-described is in itself old and ^well known in the Underwood typewriter, but cooperates with the computlng mechanism, which will now be described, to form an operative combination. Mounted on the-carriage 7 so as to travel therewith,'there is provlded oneV or more tappets 37 (Fig. 1) according to the number of computing zones desired. Each ta .pet, -as it travels from right to left. wit

the carria e, raises in succession the front end of eac one of a series of jacks 38 (Figs. l and 2 These jacks depress, `at. their rear en thrust rods 39, which rock bell cranks 40 having upwardly extending fingers 41 (Fig. 11) arranged in echelon, and resting against fingers 42 projecting downwardl from links 43 (see Figs.`11 and The inks 43 are pivotally connected to bellcranks 44 and 45, -which are also connected together in each instance by a link 46, causing the links 43 to move in parallel. When one of the bell cranks is rocked by ,its associated tuates the link 43 with which it is associated, so as to raise the same, whereby a finger 47 projecting upwardly therefrom will raise a rack bar 48 resting thereon.' The purpose of these linkages is to effect a transposition, inasmuch as the carriage in moving from right to left goes from higher to lower denominations or ordersv wlule the denominations are arranged from higher to lower going from left to right in a computin head 49, the wheels 50 of which are actuate by the rack bars 48.

The rack bars' 48, vith the exception of the units of pence ra'ck bar,indicated .at 71 in Figs. 4 and 6, are each provided with a rack 52 (Figs. '5 and 7 to 10), meshing with a gear 53 loosel mounted on the computing head shaft 54 Fig. l)- Each of the gears 53 is connected to the puting or dial Whee1`50, as will be seen more clearly elusive and 30, by a one-way pawl and ratchet mechanis including a spring-` pressed pawl 55 mounted on the computing or dial wheel 50 and a one-way ratchet 56 engaged by the paw] and secured to the gear wheel 53. This enables the racks to rotate the computing` or dial wheels 50 when moving forwardly, and permitting thegears 53 to rotate idly" during the return motion of the rack bars. 'Si L i In view of the fact that thereare twelve pence in a Shilling, the pence wheel,`which is double, is dividiedfinto twelve divisions,

4515"l so as to be capable'offexhibiting twelve nu-` ]'ack, it in turn ae- -in general at 60, which i x(Fig. 16) with corresponding comby reference to Figs. 21 to 26 in.

merals from 0 to 11,

The mailings "wheel is also divided into twelve divisions,

than the same gears which are connected to rotate the other dial wheels. words, farthings and pence wheels to the gears 53 on the other dial wheels is as twelve to ten.

The rack bars 48 which may be also called denominational or they determine the In other order or denomination of 'the wheel which they rotate, are provided with pins 57 (Figs. 1 and 5 to 8) settable from a position projecting 'above the rack bars topa position projecting below the rack bars into the path vof-movement of a cross bar 58 (Figs. 4 and 18) which forms part of a general operator 59. These pins 57 determine the extent of movement of the rack bars by the general operator, and are set by a pin-setting mechanism, indicated is operated bythe numeral keys 2 (Fig. 1). f

For this purpose, each of the numeral keys is provided with a depending rod 61, kwhich'is adapted to engage an opposite arm 62 secured to an associated rock shaft 63. Each rock shaft 63 is provided with lone or more upwardly extending arms 64 which engage wrists 65 on links 66. These links 66 are connected by a pair of bell cranks 67 a parallel link 68, so as to depress the same against the tension of one or more springs 69. Each of the links 68 is arranged above and transversely with respect tothe pin-bearing rack bars 48 so as to overliea transverse row of the pins 57, whereby each link, when depressed, is capa- `ble of setting any one of the pins in the ,subjacent row. whichv happens' to be vraised above its fellows, due to the elevated position of its rack bar.` As stated above, the rack bar"is raised in each instance by the tappet onthe carriage actuating the conthe relation of the gears 53 on the` order bars, inasmuch as4 nected transposition linkage when printing is being done 1n the corresponding denominational or order columnl of the typewriter.

The number of pins on the several rack bars 48 varies according to the particular order or denomination which the computing wheel associated with the particular rack bar is designed to compute. By reference to Figs, 4 to 10 inclusive, it will beseen that the farthingsba'r, indicated at 70, has three pinshthe units of pence bar 71 has ten pins, the tens of pence -bar 72 eleven pins, the units of shilhngs bar 73 nine pins, the tens under` the farthings bar indirectly by one of the jacks actuated by the'carriage when the latter is in a proper position for writing farthings, so that when the shift frame is' raised to write upper case characters, the lifter will be raised to raise -the farthings bar. Toaccomplish this, the farthings link 43, which is raised by the associated bell crank41 when the-corresponding one of the jacks 38 is rocked, underlies a curved arm 97 (Figs. 121 and 19) on a pivotally mounted lever 98 which is connected by a link 99 to the floatin lifter 100, the latter having-a in 101 a apted to be brought under the arthings bar 70 when the carriage is in a position to print farthings. The upper end of the hook 100 is pivotally connected to one arm 102 of a species of bell `crank lever 202. 'the other offset arm of which 103 is forked (Figs. 1 and 12) so as to permit a pin 104 to pla between the tines 105 and 106 thereof Tliis pin rocks the bell crank lever 202 againd; the tension of a spring 203 so as ,to

' draw on the lifter 100,and thus raise the 'may be set when the corresponding keys are struck. The 'pin 104 is mounted on an arm farthin'gs bar 70 so that the pins thereon 107 which is secured to the pivotal rock shaft 22 which rocks with the swinging movement of the shift frame 21 in raising the platen 6 for upper case characters. AIt will thus be seen that when the carriage is in-.a proper position for writing in the farthings column, the hook 100 will be shifted under the farthings bar, so that when the shift key is actuated to write upper case characters the fax-things bar will be raised the ylinkage 43 is able tolift the farthings' ar alone; in other words, said bar is e'ffective only during and through the conjointr enabling the pins thereon to be setwhen any one of the keys for writing L 4f andj is subsequently struck. It will be observedfthat neither the platen shift no1' actionI of the platen shift and linkage.

The carrying over of one complete ex- *change value from a lower to ahigher order is brought about in a manner similar to that shown in my above-mentioned applications.

That lis to say, each of the computing or i Ydial wheels 50 is provided with atleast one special carry over' tooth 108 (Figs. 1 and 20.to 29) which once in a cycle comes in engagement with the teeth of a mutilated gear 109. Every third tooth 110 in each of these mutilated .gears is cut away so as to normally offer a blank space toau 'assisting sector or segment arm 111 arranged to rotate in apposition thereto. However, when the-special tooth. 10S shifts the mutilated gear 109 through a vninth of a revolution, it

will bring the next whole tooth into. the path of the. corresponding assisting segment 111, so tht\ when .the latter is swung around it will lnhte' the mutilated gear Aand also 'a three-toothed gear 112 secured thereto, whereby the latter, which meshes with a gear 113 on the next higher computing wheel. will rotate this next higher computing wheel one step which may be one-tenth" of a revolution or one-twelfth ofaz revolution according to the particular dial or computlng wheel.

The dialwheels are held in any adjusted i position corresponding to an exhibition of any particular. number by detents `114 (Fig. 1) which engage the gears 113. Likewise the mutilated gears 109 are h'eld against accidental rotation by detents 115. Each pair of detents 114 and 115 have a common spring ..116 for holding them in action. `The assisting' segments 111 are secured spirally on a shaft 117 which is rotated solely during the return motion of the general operator 59 and the crank 82. The assisting shaft 117 is driven from the general operator 5 9 by a gear 118 which meshes with one of the racks 79, and also meshes `with. a gear 119 having a one-way clutch connection 220'(Fig. 31) with the shaft 117.

This clutch (Fig. 31) is of the ball and `camsocket type, and arranged so as to permit gear 119 to rotate idly during the forward motion of the general operator and toconneet the gear 119 'with the shaft'll during the return motion of the general operator.

By reference to Figs. 20 to `29 inclusive,

the character andnumber. of special carry over teeth 108 on the various diilerent dial' or con'rputing wheels will be seen. In Figs.

21 and 22 corresponding' to the poundsand units of shillings computing wheels, there is but. one special tooth 108, and there are exactly ten teeth on the gears 113 corresponding to ten numerals, from 0 to 9, which these particular dial wheels are capable of exhibiting.

In Fig. 23, which illustrates the tens of shillings train, it will be seen that the dial wheel is provided with five special teeth '108.

the reason for which will be evident by reference to Fig. 29, where it is shown that the tens of shillings wheel, indicated at 120, has tive numerals 1 to be exhibited in one com.` plete rotation ofthe tens of shillings wheel, each numeral 1,3 however, spaced apart by a Ablank space which is arran `to show up intermediate the 'showing o each digit 1.v In this case also the tens of shillings dial wheel has ten teeth on its gear 113. In other words. the tens Aof shillings dial wheel will complete a cycle five times in a revolution. that is' to say, it will carry to'the units of pounds wheel five times inl Ievery revolution.

e0 perinitte 5 scolnpleted but once in en entire revolution u of `this Combined omplilting wheel.` The gear `113 however, of this computing wl'leel 1s provided with twelve teeth corresponding 5 tothertwelve steps of which the'computin wheel enPoble,which.` will be seen by re erence to l `i"g. 2`8"to run'fro'my Ol to "11. t ByreferencetoFig'.l 25 itwill he observed that the .farthin `computhig or diel'wheels i 10` provided withthreeoftl'ie special carry over' teeth-108, thut'the farthings, wheel,l will curry once every third n revolution, that is to eu/y, it eolnpletes 'e cycle three tiiilesyiin 1 "ever Xlevolutionof the dialwheel. The-gem' 715 113 '1nl this-instance "is provided with twelve `teeth l'siniilar to thepen'ce gear in' Fig. 24, inasmuch" as "the farthngs' wheel 4also-hes` "2.o when 11e-registers cleared (i. e. set 1w `zero)1-px'or'-r to `stm-tiring' newwork, the dial 'wheelsfof f the tens l.orf-shillings and vthe ferthings will rotetega "greater or lessd'istence if depending on their osition relative tothe. 2:5` means for setting t e dial Vwheels to zero orf'mblenk spapce` lIneemnuch as-'these tufo dial 'wheelsere provided respectively with tive: and three sgechl' carry over teeth! 1.08',

C provision must` made `to preventy 'the the speci al teeth, "which may come. around( i in moving' the dial wheels to zero, will not actu ntey the'lnssocia'ted geen 109,y so 'that it wi only be setfonce` for `carryingpover 1in 140 specific' zerol'clearingoperation. y ,E

The [r'insli, after *hitting controlled, th

extentnf movement' of the raek bars`on to.; their raised position. l thefraine 138 has depending-therefromo. liftin henger hnvinge cross ber 1,46 `whieh lifted when .the .subtraction .key` l rocks 'thefreme13 8. f `It-7 will be vnoted. "ralityofbellcrenlg'flevers 122 and 12,3:j(Fig.} x

b'elleianlrl levers ere connected i f` links f1214g5so es to meintainthe which they lare'n'nolmted, arerestored at the 1 rtrnflof the'generl'l'eretor in thef'snel inahnerf For this purpose,` there` is ,piovidede `inreetorlnrpletef121 (Figsxl and newbie s pivotal` 11): s u l wir t t falweysin' a. horizontal position. )The 'laiellcrnklevers' 122 "stre-fixed to e shuft 1221* obeying secured thereonyfien errn '125' Whiehis engaged n r,onlie-univ pewl 126 on M th'e'rgenernl operatorrdnring the returnnio tion thereof, so este rockV the bell crunk lYer 122'end tliepinfrestoirng plete 121 un; til it has all" `of? the` set", pins-heck to u i Y, `connected lte# al fplu pressed` when the linkage is sion-,efe` return spring 199s() as to slide -i which "innyr be pushednguinst ythe `terirearwardly u thrust rod `15.29 whichfis "prof vi'ded it its rear end, :1S will be seenhy` e shi piuoted athits upper edge my ineens of pins 134, :md restsut its lower edgein slotsrl is rocked by the `rocking ofthe lever 131,1it

to a, forward position. ".Ifhis' the yrock-'shafts so thatnstea ofA settingv thevpins for addition they will now setfor subtraction. u Y Q The thrust rod 129in 'movin not only changes the action yof ting mechanism, but also forces :L )ivote'lly mounted pawl 136v (Figs. 11 und `1 )jthereff -will'shift them vfrom a, 4reerwurd 'position-v,

ositlons `e'lll 'on rearwardly, so thut'the lutter 'oainsup-` u Wardly an inclined ,hl f 137 on a frumef`138 mountedon streek sha 145. The frernefl` u l is thus raisedat its front end so ns to inturn swing upurerdl)I an erm y139"resting thereon. t

Thev errn 139.111 turn rockspa; shaft 140"to Whichit is secured and `which also, has se;

with. linger or` lug 143 which overlies fe" cured thereonsn erm 1411 which 1 de-,fA t f ressed' vso esto force downwardly a thrustl 95 y ink 142.""The` thrust link 1142vis provided if ence to Figs. 1. untill, the `lowerlink of e` l,pin-setting linkuge;` Ihis linkage isfor the purpose of setting-nllfofithe pins cor-y` i" frespondmg with the"9` ins, that is to soy, 'allnf the pins of the llig est-ultimate "value P' one exeepti0n, `the units of pence;y 5 f "It is necessary, however, before the.l ins the pins ere to beY set shell be` moiedlip reference to Fig;k 15, however; that vthe eros@ har 146 although underlying ell-of thepin bearin ruck bers is providedwith e.' ro' or rsbget 1 7 underlyingthe units 'o highest ultimattevalu'e in ull ot'gthe ,orders `The ieweptions tobe noted ure theysingley thtt'the ropposite end thereofl `is For this Qur-pose* l f ,'15 `in ull of the rock shafts 633s() that when it raise one end of a lever l176 `te which it is connected b a" pin-and-slot connection 175.

This lever 1 6, which is pivoted intermediate its ends, is arranged. to en age a reduced portion on the single pin 1 7 on the tens of shillings bar 1.74, sothat it willdepress the same When the link 144 is depressed, set

Vting this pin up so thatit will enable a o'nestep movement of the associated tens of shillings wheel, in case no number is subtracted in the tens of shillings column. In the. case of the farthings bar, as will be seen byreference to Fig. 9, a similar arrangement is used.

One end of a lever 178 projects beneath the link 144 on the 9' pin-setting linkage, and is bifurcated at its opposite end so as to raise one end of a lever 179. When it is. rocked,

- the opposite end of this lever is depressed and carries with it the 3 pin 180 corre-v are caught in their rearw 'irdly thrust position by a detent 148 which engages a notch 149 in the under surface of the thrust rod 129. All of the pin-setting rock shafts 63 will therefore be held in their forward position, corresponding to a subtractionsetting of the pins, until a subtraction operation has .-bichrome mechanism is changed so as to' been completed; l

We will consider at this, point how'the write red instead of black when thesubtracting operation is carried? on; When the shaft 140 (Fig. 12) is rocked at the rearward plunging of the subtil-action key 128,

an arm 150 secured thereon is also rocked upwardlyy so as to push up onI a .link 151 secured to a rock shaft 153 and pulls over, through thc intermediary of a. link 154, the slide 31 `so that in place of the ear.V 32 and the pin 34 being in coperation, the ear 33 and thepin willbe in cooperation. This enables a greater movement of the ribbonbearing vibrator origuigle 29 so as to bring the red portion of the Vri-t bon 26 inv the path of movement of the type' bars.

For a subtracting operation, .the units ofA pence bar 71 is not used at all, but when Awriting in the units of pence column, the tens of pence bar 72is raised, so that for whatever number is struck to be written in.'

the units of pence column, the complement ofthe corresponding )number will Lbeset up and t ins, it

on the tens of pence bar. To accomplish this, in place-of the vnormal upstanding finer or projection 47 found underlying all of e: other pin-bearing rack bars 4S, the units of pence rack bar and the vtens of pence rackv 7'0 ba'r are adapted to be operated by shiftable'4 upstanding fingers. Considering this' feature in detail, slidingly mounted on thelink. 43, corresponding to the units of pence 'oar which will be raised when writing in the umts of pence column, there is provided a shiaabaanger 155 (rigs. 12, 1a and 15a s' p Similarly there is provided a shiftable iin r 156 slidingly mounted on the link 43 which will be raised when writing in the tens of 80 pence column. The finger 155, however, is about twice as wide as the finger 156, so that when both fin rs 155 and 156 are shifted to the right in Flg. 15, while the finger 156 will come in a silent position in register with the spiace between the tens of pence bar 72 e units of shillings bar 73, so as to be incapable ofv raising any pin-bearing rack bar, the units of pence finger 155. will pass from under the units of pence rack bar-71 90 Ato a position beneath the tens ofpence rack bar 72. l i i Under these circumstances, when writing"v in the tens, of pence column, no rack bar will be raised, and no in will be set. However, 05 when writing in t e units'of e'ncecolumn, the tens of pence rack bar will e raised,'and

` pins corresponding to theV complement ofthe key struck will be set up on the tens of pence bar 72. Thengers 155 and 156 are slid 100 over to their subtracting position at the actuation of the subtraction key 128. f To accomplish this, the shift bar'133 (Figs. 12 and 1,5), whchmoves all of the 'pin-setting -shafts 63 forward, has secured thereto an 105 arm 157 which is reduced to `a finger 'so as' to extend into an'inclined slot 15on a lever 159. The lever'159 ispivoted at 160, and

has pivotally connected thereto slides 161' and 162 which straddle the links 43 corre- 110.

s onding to the pence columns and have the V ngers 155 and 156 mounted thereon. It. will thus be seen, when the'r shift bar 133 isrocked .to change the pin-setting linkages from their adding setting state to their subtracting` setting state, that the lever 159 will be rocked at the same time, thereby drawing the fingers underlying the units and tens of pence rack bars 71 and 72 from their posi-l tionr'shownin Figs.. 12 15 to their sub- 120 tracting position.A

The pin;setting linkages will now be described in dctaiL Referring to Figs. 3, 13 and-14, when the pin-setting mechanism is set for adding, as shown in Fig. 3, the arms on the shafts 63, which have been referred to inA general by the numeral 64, and certain of which are now referred to specifically according to the numeral key and. the charactei-of operation to which theygyrrespond as :l ,avvenne g lx" w th w tl-act; fit ,mln eirul, key 2 would be h much, .inv 0l? the arm 2S Fig. ge 1li correenmplement of? twat, using Sotlr; ttl'ligtlink` y yment, with `am up n 16S, (Fin. 9) ony a telly l'x'lountzed on the fab A mel. engaging the lupin 170 hay 70.

up tov enne@ L one-step h'xoven'lent bmzlnd 'the essonuted'ful-things t, pot'ltml. out in pu:

that although Mineola] l' nhg 2m and 1 mchhavetwo www um' to n tuftte them, they will f wltll, e 'i1 'l the leunt, by

nu up the 'W170i' hm' und th t speotively in am] `te of me columns. h 1, f nimh as the exelumge lvalue for pence two glen-tel' tIhzLnft-lle excl'mnge value of the decimal ord and as fthe pins ofthe tens of p nce hurl ')l'set two points n l twum l te number, [Inks "l me to w tl "respect to those of t other hure, `the 40 'F' to elilliltrnet, l up; of; thekeys l thun mne for sub-j olf pence fVl'len key' to v unl of pl-'nnte eohiunm,v W "reime-mae to Fig; 13

n 10S 'te roe with the stri-kingof the sume keys for the demrnal orders.

,Inasrnuch as, when the subtraction key wou be Struck,v and 're QU which would 2 pm on the teneof pence tu ion of two points of the land unite of' 'pence compute@ muchos the s lne bar` will lnlnl l lu' ffother Apine are/set up on the sume malibu 5f To u ecomphsh this, euch of the rock ,Shafts Z'LOv not make a Correct calculation to restorenthe .ultimate pin on the units of shlllings bar v or on the units vof pounds bar as we desire to leave the unitsof shillingsand the units of pounds the same when nothing is subtracted from them. Inasmueh as the eX change value from twelve instead of ten, 1t is necessary to restore the highest or ultimate pin correspondingr to 11 when 0 is struck to subtract ten pence.

To restore the highest ultimate in Yon all of the poundsbar and the units o. shillings bars, each of the 9 pins is provided with a reduced (Figs. 4f and 5) pivoted intermediate its ends, and with its rear end rejecting under the pin-restoring linkage 172. In the case of thetens of pence bar (Fig. 7), there'is provided a similar lever 182 which engages the highest valued pin 83 and not only pro,-v jects under the piu-restoring linkage 172, but also projects under the pin-restoring linkage 17 3. The levers 176 and 179 for the tens of shillings highest pin andthe farthings highest pin respectively also project beneath the pin-restoring linkage 172.

By this arrangement, after the subtraction key has oncebeen shifted to arrange the pinsetting linkages according to their subtracting` state as each vnumeral key is struck the pin of highest ultimate value of the particular order being written in, which was set up by the subtraction key, will be returned to its normal position and a pin corresponding to the complement of the key struck will be set, up, usingas a base or complete mimber one lessthan the exchange value of the order being written in to the next higher order. The exchange value, of course, in this Engf lish system, as pointed out above, is not the ysame between every two orders, but the machine automatically takes care of this difference, in the manner pointed out above.4

In this type of machine, arrangementis made whereby the mechanism will complete but one subtracting. operation for a single actuation of the subtraction key. This is' accomplished by returning the mechanism to its normal adding state after the Acompletion of a subtracting operation. To do this, use

. is made of the nfal return'movement of the general operator. There is provided on the bell crank lever 122, which is actuated to lift the'pin-restoring plate 121 in restoring all of the-set pins, a wrist 183 (Figs. 1 and 11) which is located so as to engage a hook vso 184 `on an-.extension of the detent 148, so that the detent will be rocked when the pinrestoring plate is lifted, thereby releasing rthe thrust rod 129011 the subtraction key 128,

to return to set position. Thls likewise'permits'the bar 133 to return tonormal position perlp'litting the subtraction key shirt pence to shillings is` portion engaged by a lever 181 thereby shifting all-of the rock shafts 63 and the associated arms, which actuate the'. pin- Isetting linkages, back to adding position;

lVhen the subtracting operation is changed once more to adding,'it is likewise desirable to change the printing from red back` into black. For thls purpose., one of the side plates or bars 78 ofthe general operatoris provided-'with a cutout groove or rabbet' 186 (Fig. 11) in which normally rests an enlarged ollowing end 187 on a bell crank 188; A spring 1189 holds the bell crank inv its normal position, shown in-Figs. 11 and l 12, with the enlargement of the bell Ycrank in the rabbet 186; However, when the gen:

eral operatorlmoves forward to run up the subtraction computation accumulated, the follower 187 will be cammed up ontothe top of the side bar 78, so asto rock a shaft 190 on which the bell crank 188v is secured'.

-under the tension of a spring 185'y (IT ig. 13), 65

There is alsoprovided on thefrock shaft .190.

the pawl 136, as will be seen by reference to ,.Fig. 17 will snap idly by the inclined prowithout raising the fra-me 138.

jection 137 To accomplish this, the pawl 136 is pivotally mounted at 193, and is'held in a normal position with a shoulder 194vthereon against va ,pin 195 by meansrof a spring196.' The spring196 will yield, however, to permit the pawl A136 to snap idly by the inclined projection 137 during the return movement of the thrust rod 129 and the subtraction key 128 to their normal inactive position.

In the operation of the device, the numeral'keys arestruck as usual when the carriage is in a computing zone. The tappet on the carriage will operate the jacks and 4linkages successively, so as to raise the rackbars in proper sequence,l whereby the 4accordant rack bars will be raised to enable the pins to be set thereon, when printing in corresponding orders or columns on the typewriter. i

In the case of farthings, the jack; and

VV ti1tnsposition linkage actuated by the tappet on the carriage, will place the lifter 100 so that the fart'hings bar 70 can be raised.

It is then necessary to actuate one or the other of the shift keys so that the platen is liftedto write upper case characters. The shift frame for the platen will thus act, through the intermediary of the arm 107 and the bell crank and connecting arm,- to raise the vlfte 100, thusraising', the rack bar 70.

positiolr depressed during for adding,

l gilgeinent with the of pence bar,

has n lead of two steps' the cross hers, thereby mov- 'f to strike the )ecinl l ini'he tens ot' the highest n. is the l1 pin. i

lWhen the pins are ser up digits of n coniplete nnnrber,

eral opereti'ir isv run forward 'y 1,279,5ee

or 3 can be then` for iill'of, the then the gen inthe usual manne b y the actuator or crank 82, so that the L s ber; 58 thereon will cese of the ten lugr or pro tion over the rr t of' come into enseveral pins. y Inthe` however,` the ing ythe tens of pence rack'ber two points gin-eater than any other rack bnr ,can be moved for the elined pin.

The units of her 71 docey not ect directly on the coni )ined units and tens of police computing wheel,

lint trensi it due to pins set up `therefm indirectly the `luer 163 sind the projection '164, to the ,l

pence bar, which is connected by ai tens of s any inovci'nent which it has,

through rack an( pinion to the composite pence computing wheel.

The carrying over from one order tekes pince order to. the `during the return motion of thecrnnk 83 in the regular manner, 'Any mutilated gear 109, which may happen to here-'been set up by e special tooth 10S onthe associated computingwheel,

by the latter coming into engagement there# with at theeolnpletirm of :i cycle'for that einnpiiting wheel, will. have its movement cmnplet ,t ciated` segment 111 hy the engagement of the nsso="`` which is rotated solely during the return motion ol" the general operletor, so that the geur 112 connected thereto wi ll ed vm'ice the ,er 113 and the connected computing `Wheel of the next higher order one step.

To enehle a. subtraction key 128 subtracting1 opertio'n, the is pressed rearwardly and'ls caught in its subtracting or active po "against the ten will be thrown ont of (iiyfierntion and the suh-k 15, 1^. 25, 2S, 3S, 4B, 51W,

sitionby the' detent 14:3 werdly,v the snliitrnction key, terined'iery of the cem 130, 131 so es to force I*In moving rearthrongh the inrocks the lever thc shift lier 1:33p forward on of its spring thereliiy shifting 'all of the rock shafts 63. hearing tractifm arms' 89,95 nnd=1 that the th row n into opera tion.'v

adding iirnls 95.10A, nml "l1A of` the. iii-ms (lettered ASW perform n doible function tlmtis. ect vtion nnd V ferent linkages. The

f `firms l to 11,R on the rock `btrzn.;tion in connection jwi y movement' ol'y the 'rock shafts 113 will also bring; the "pi'nrestorinugi lthe rock-shafts for operating the siunejwill sten-d of the exact Vnlueofthe" key struck.'`

u cut-,out portion in the bnr ,146,

gngement with the pinfrestoring linkages 1,72 and 173. `The pnrsetting linkages mid" setnp the pins eccoilini;

the keys strurk in- "70 thus be arranged to to the complements of The 1'i ),ar\\':\rd inotiolr ot the subtractionl key, in addition toarrnngring thepirvset-X ting linkages iu'fcording to their silhtrnintion action?,unused` `the paiwl 11.36y

totemporarily l cuni up the freine 13S so esto lift all of the 75" pin-bearing rnck liars, with" the exception of the 'units ot' pence rack bnr which is opposite und conconiitantly depress -the linka'14f1 (,niwtlie pin-setting linkalge lthereby setting ell of the"pins correslvioiuiling to the` 9 pin inzr decimal system, that is; all ofthe pinsfo'l highest,ultimatevelne 'on all of `the piny hearing rack hars, with the" exception of the` i units of pence rack l,nir.` y n f The 9 linkage also, et this time, sets iup` the soliterypin on theirecik ber engaging the computing` wheel `of` highest order,` so as vto lgive it likewise nine-tenths ofy ar revolution.` y f i ,Inasn'mch es this'rack har is never rniseff- 00" by a; linkege'ectnuted from the tappet only?, the carriage, this pin vwill not be restored during'the subsequent setting up of the pins. The 91* linkege also setsnp the solitary pin SGon the extra rack our 85 engaging the 'blank dial wheel of lower order then the ferthings ,dinll wheel. Because ofthe projection 89 on the generali operator, this pin 86 corresponds to e 1() pimalthough it is 'arranged in ulinement with the 9 pins. y Pell such ruck bers es lnwe vhot had `pins set thereon by the actuation of' the" nemer-lil keys, will rotate the `associated diill wheels an amount corresl'iomling to one less thune cycle of tliepzuitienlnr dial wheel. cycle it is notineiint to imply in all ceses n corn-` `pleterotation', hut-inerely :i increment cor responding to the exelnn'ige velue from that dial wheel'to the next highertlial wheel. For example, four steps of' the "fer-things diil wheel is e ycycle for that wl veel elthoughjit would take twelve stel vi' 'give 'e complete revolution thereof. 1t t l j Incidently fthe shifting: of the` frame 138 changes the l'iichroine lneclmnisnnthrough .the `interinediery of the emmer-,ting linkages, vtrom :t state for printing hlnck' to n.v ste-te for printing red. The movement Vof the shifting bnr 133 to change the elutructer of action ot' the pin-setting linkages, also' shift#` edrthrougliu the niterniedim'y of the erm 157 and thevlever' 159,'the two ngersjl i and 156; so'` that tl'ielniter moves tolnn ill-'f 1" l efl'ectivelposition between the tens oli-pence f `fi rack bar 7 2 and the shillings'bar A73 while4 12B `the'hrmrderfinger 155V movesfromnlposition i u .coperiitingfwftlitheunitsof pence reich bnr l l 71 to a. position'copernting'withjthe tenus` `viel of pence rack bar 72. This enables the tens of pence rack bar to be raised, when writing in the units of pence column, While no rack bar is raised when writing in the tens of pence column, the units of pence rack bar being silent during the subtraction operation. Inasmuch as the tens of pence bar has eleven pins, this operation can vbe readily carried out, the only difference being that when one. is subtracted, the normal l key is struck, and when eleven is subtracted, the special l key v197 is struck when Writing in t'he units of pence column.

As each numeral'key is struck in the successive columns in `the computing zone, the complement of the value of the'ke using one less than the exchange value as the base I.stance th'emillions of all of the dial wheels This action or complete number, isset up on the proper rack bars in order. The accumulated coinputation is run up on the computing wheels in the usual manner` by the actuation of the crank 482 which actiiates the general'oper'ator. At the same time,`the special dial wheel on the lower side of the farthings wheel is rptated one complete revolution, so' that its tens-carryin mechanism is set to carry one to the fart ings wheel. Also the highest denomination dial wheel, in this inpounds dial wheel, is a revolution, so that will be rotated one complete revolution less the value of the numbers struck inea/ch column corresponding to each individual dial wheel. This. is

the same as if the dial 4backward the exact amount corresponding to the numeral key struck vin the several columns corresponding to the dial wheels. As the general` operator completes its return movement, during which the carry' over operation also takes place, it .actuates the rotated nine-tenths of pin-restoring plate 121,` so as to restore allof the set pins 'to their normal position. causes the wrist 183 to trip the detent 148, permitting the subtraction. key to return under the tension of its spring 199. This permits the spring 185 to return the shift bar 133 to` its normal position, thereby returning the shafts 63 and the associated arms to their responding to adding. The initial forwar movement of the general operator forced the bell crank 188 up out of the socket 186, so' that the connected arm 191 192 to depress the link 151, whereby t-he bichrome mechanism was shifted to its black printing position. The entire mechanism will then be in condition to add and` to print in black. It will be seen that it is necessary to actuate the subtraction key for each new subtracting operation.

` Variations may be resorted to within the and portions of the ixiipizaseiiaents may be used without others.

aliiied in each a .single set yof wheels had rotated 'having pins thereon settable normal position cor- 2 struck the finger v I .i

Having thus` described my invention, I claim.:

1. In a computing machine, the combina4 tion with a device adapted to compute both integers and fractions, of settable members denomination for integers, vsetting members, keys for operating said settingmembers, other settable members for fractions, all said setting members normally aliiied to be effective on settable members of their value, and connections whereby, tions, certain setting members are el'ectiv on settable members alined for other values,

2. Ina computing machine, the combination with a device adapted to compute both integers and fractions, of settable members aline'd in each denomination for integers,

in .computing certain fracf a single set of setting members, keys for settable g members of their value, connections whereby, in computing certain fractions, certain setting members are effective on settable members alined for lother values, computing wheels, and a general operator for driving said computing wheels by said settable members to an extent determined by the members set, so as to be first operated on by said general operator.v

3. The combination with a having pins thereon settable a preliminary representation of a computation, of linkages forvsetting said pins, said pins being settable by coperative movement of said-bars and said linkages, and a bar for causing a movement,of all but one of said pin bars.

4. -The combination vwith a `series of bars to accumulate series of bars to accumulate a preliminary representation of a computation, of linkages for setting pins being settable by `cooperative mov said pins, Said4 ment of said bars and said linkages, anda bar for causing a movement of said pin bars; said last-mentioned bar having a cut-out portion or groove arranged in opposition to'one of said pin bars.

5. The cdmbination with a computation accumulating means having members corresponding to each order or denomination of a system, of means for concomitantly changof all but one ingthe character of computation and ren- A dering ine'ective one of the members corresponding to a certain order,

6.' The combination With a computation accumulating means having members corresponding to they several orders of the English or sterling system, of mechanism4 for silencing at will the member corresponding to the units of pence order.

7. '1`he combination Iwith/a series of pinbeaiing order bars halving the highest val- 

